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  #101  
Old 12-10-2013, 09:55 PM
r00t r00t is offline
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If the Big Bang happened 13.7 Billion years ago, how is the edge of the observable universe 16 Billion light years away? Did the universe expand faster than the speed of light?
  #102  
Old 12-10-2013, 09:56 PM
Kagatob Kagatob is offline
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Quote:
Originally Posted by r00t [You must be logged in to view images. Log in or Register.]
If the Big Bang happened 13.7 Billion years ago, how is the edge of the observable universe 16 Billion light years away? Did the universe expand faster than the speed of light?
You're adorable... thinking were in the center of the universe or something.
  #103  
Old 12-10-2013, 10:02 PM
radditsu radditsu is offline
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Quote:
Originally Posted by Sadre Spinegnawer [You must be logged in to view images. Log in or Register.]
when she gets out of the shower, does she shake it like a big ol' grizzly coming up from a stream with a salmon in its mouth?

cuz that's what I'm talking about.
I swear that big ol beaver makes wookie sounds and could audition for zz top.
http://m.youtube.com/watch?v=AjMhGRMhO6s


That shit is bad to the bone.


I know where the arizona skunk ape is hiding!
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  #104  
Old 12-10-2013, 10:03 PM
r00t r00t is offline
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It doesn't matter where our vantage point is. Yes, two objects moving away from each other at a constant velocity, in opposite directions, in classical physics at the speed of light would be 2c (v1+v2=2v). But this equation breaks down when we talk about relativity, and we get the following formula.

v = (v1+v2)/(1+v1*v2/c^2)

Now you see when velocity is low, it is very close to the v1+v2 formula. But as the velocities approach c, the limit goes to c.
  #105  
Old 12-10-2013, 10:06 PM
r00t r00t is offline
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v = (v1+v2)/(1+v1*v2/c^2)


v = (c+c)/(1+(c*c)/c^2)

v = 2c / 1+1

v = 2c/2

v = c
  #106  
Old 12-10-2013, 10:13 PM
radditsu radditsu is offline
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C is not a number. .neither is v
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  #107  
Old 12-10-2013, 10:15 PM
runlvlzero runlvlzero is offline
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That's only so that the formula fits whats observable, cause Einstein used light as a base constant. And they only could measure light. He was a smart guy for not making assumptions.

We now also know that light behaves more weirdly and can be slowed down/sped up. I wonder how many physicists have thought to take that into consideration?

Not saying his equations are bad, but they do not explain everything possible. Only a finite set of probabilities. Based on light.
  #108  
Old 12-10-2013, 10:15 PM
r00t r00t is offline
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Let me see if I can explain this better.

Let's say we have one photon at the "north pole" of the universe, and one at the "south pole". Both of them traveled straight from the "center" of the universe at the speed of light. According to the Velocity-addition formula using theory of special relativity, the max distance between them is still time * c, not time * 2c
  #109  
Old 12-10-2013, 10:19 PM
r00t r00t is offline
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so it doesnt matter if we're not at the "center" of the universe, any edge we can measure is still capped by the big bang. I was wondering how this is possible that they measure the expansion at 16 billion and the universe age at 13.7, on the off chance any of you are an actual scientist like me ofc.
  #110  
Old 12-10-2013, 10:20 PM
r00t r00t is offline
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err trillion* not billion obv
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